title: Short communication: Comparison of the newly developed DVE/OEB (2010) system and the National Research Council (2001) model in modeling metabolic characteristics of proteins in dairy cattle.
abstract: The truly absorbed protein in the small intestine/degraded protein balance (DVE/OEB)2010 system is a recently developed protein evaluation system for ruminants. The objective of this study was to compare the DVE/OEB2010 system with the National Research Council (2001) model in determining the metabolic characteristics of proteins in dairy cattle. The metabolic characteristics of proteins in bioethanol feedstock and their co-products were compared in terms of (1) truly absorbed rumen synthesized microbial protein in the small intestine; (2) truly absorbed rumen undegraded feed protein in the small intestine; (3) endogenous protein in the digestive tract; (4) total truly absorbed protein in the small intestine; and (5) protein degraded balance. The DVE/OEB2010 system predicted 30% more truly absorbed rumen synthesized microbial protein in the small intestine, 4% more truly absorbed rumen undegraded feed protein in the small intestine, 64% more endogenous protein, 9% more total truly absorbed protein in the small intestine, but 27% less degraded protein balance.
authors.affiliation: Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, SK, Canada.
authors.forename: I H
authors.initials: IH
authors.lastname: Gamage
authors.forename: Peiqiang
authors.initials: P
authors.lastname: Yu
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena / Q000502:physiology; D000818:Animals; D002417:Cattle / Q000378:metabolism* / Q000502:physiology; D004044:Dietary Proteins / Q000378:metabolism* / Q000493:pharmacokinetics; D005260:Female; D007408:Intestinal Absorption / Q000502:physiology; D007421:Intestine, Small / Q000502:physiology; D008954:Models, Biological; D012417:Rumen / Q000502:physiology
chemical_list: D004044:Dietary Proteins
keywords: bioethanol feedstock and co-products; metabolic characteristics of proteins; modeling nutrient supply